CB - What is a CB in football?

CB has 2 meanings. The most common is "Cornerback." See examples of how people use the terms.
In football, a CB is a cornerback, which is a defensive back (DB) that typically guards a wide receiver. The CB's primary job is to defend receivers, which are typically wide receivers (WR), tight ends (TE), and running backs (RBs).

Joe Starkey's mailbag: Should Steelers swing last-minute deal for Bears CB Jaylon Johnson?

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Packers CB Jaire Alexander to miss 4th straight game Sunday night against Chiefs

Legend CB Paolo maldini, Football wallpaper, Ac milan

Alabama CB Nigel Knott's football career over due to medical concerns

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Texas CB X'Avion Brice enters the NCAA transfer portal - Burnt Orange Nation

Browns waive CB A.J. Green III after claiming Kahlef Hailassie off of waivers

Centre Back - FIFPlay

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NFL Draft prospect Devon Witherspoon's football highlights wow fans